The U.S.-backed Syrian Democratic Forces said Wednesday that its fighters are besieging the Islamic State militants inside the city of Raqqa in northeastern Syria.

In a short statement on its official Twitter account, the SDF, an alliance of Kurdish, Arab and Assyrian fighters led by the Kurdish YPG group, said IS militants are besieged in the “last few areas they are still holding in Raqqa.”

US-backed Syrian Democratic Forces besieging the Islamic State militants inside the city of Raqqa in northeastern Syria.